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Time–Frequency Maps for Multiple Partial Discharge Sources Separation in Cable Terminations
IEEE Transactions on Power Delivery ( IF 4.4 ) Pub Date : 2023-03-13 , DOI: 10.1109/tpwrd.2023.3256127 Yufeng Li, Jinchun Han, Yufeng Du, Haiyun Jin
IEEE Transactions on Power Delivery ( IF 4.4 ) Pub Date : 2023-03-13 , DOI: 10.1109/tpwrd.2023.3256127 Yufeng Li, Jinchun Han, Yufeng Du, Haiyun Jin
This letter proposes improved time-frequency maps for separating multiple partial discharge (PD) sources in cable terminations. PD signals are acquired through a digital measurement system and a high frequency current transformer. The waveform of each pulse is analyzed by synchrosqueezed wavelet transform, and six representative feature parameters are proposed to form time–frequency maps. The results show that the proposed algorithm is effective for discriminating mixed PD sources in cable terminations and pulses from power electronic devices detected simultaneously by the PD measurement system.
中文翻译:
电缆终端中多个局部放电源分离的时频图
这封信提出了改进的时频图,用于分离电缆终端中的多个局部放电 (PD) 源。局部放电信号通过数字测量系统和高频电流互感器获取。通过同步压缩小波变换分析每个脉冲的波形,并提出六个具有代表性的特征参数以形成时频图。结果表明,所提出的算法对于区分电缆终端中的混合局部放电源和由局部放电测量系统同时检测到的来自电力电子设备的脉冲是有效的。
更新日期:2023-03-13
中文翻译:
电缆终端中多个局部放电源分离的时频图
这封信提出了改进的时频图,用于分离电缆终端中的多个局部放电 (PD) 源。局部放电信号通过数字测量系统和高频电流互感器获取。通过同步压缩小波变换分析每个脉冲的波形,并提出六个具有代表性的特征参数以形成时频图。结果表明,所提出的算法对于区分电缆终端中的混合局部放电源和由局部放电测量系统同时检测到的来自电力电子设备的脉冲是有效的。